Home / 20,355.48-30,481.38-13,408.92

Finding the Fourth Proportional to 20,355.48, 30,481.38 and 13,408.92

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Solution

The fourth proportional to 20,355.48, 30,481.38 and 13,408.92 is: 20,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.48 : 30,481.38 = 13,408.92 : x
  2. Step 2: Convert to fraction form
    20,355.48/30,481.38 = 13,408.92/x
  3. Step 3: Cross multiply
    20,355.48x = 30,481.38 × 13,408.92
  4. Step 4: Simplify right side
    20,355.48x = 408,722,385.91
  5. Step 5: Solve for x
    x = 408,722,385.91/20,355.48
  6. Step 6: Final answer
    x = 20,079.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.